Chris Christie to Warren Buffett: Just 'shut up'

NEW YORK (CNNMoney) -- Outspoken New Jersey Gov. Chris Christie had some rather harsh words for billionaire investor Warren Buffett on Tuesday.

During a discussion with CNN's Piers Morgan about tax rates, Christie made it known that he's just about had it with Buffett, the world-famous investor who lent his name to a proposed tax hike on the rich.

"He should just write a check and shut up," Christie said. "I'm tired of hearing about it. If he wants to give the government more money, he's got the ability to write a check -- go ahead and write it."

Earlier in the interview, responding to a question on class warfare in the political system, Christie, who has developed a reputation for not mincing words, said he didn't want to discuss Buffett.

"I'm so tired of talking about Warren Buffett," Christie said. "What are you going to bring up next, his secretary?"

First proposed by President Obama last year, the so-called "Buffett Rule" is intended to ensure that people making more than $1 million a year pay a higher share of their income in taxes than middle-class households.

But the administration, in putting forth Obama's budget last week, made clear that they are not pushing to implement the Buffett Rule now. Rather, it's a guiding principle for when -- if -- Congress takes up tax reform.